package com.jdbc;

import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;

public class DataSourceUtils {
    private static DataSource dataSource;

    static {
        //读取配置文件的对象
        Properties properties = new Properties();
        try {
            properties.load(DataSourceUtils.class.getClassLoader().getResourceAsStream("druid.properties"));
            //创建数据源
            dataSource = DruidDataSourceFactory.createDataSource(properties);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }


    public static Connection getConnection(){
        if(dataSource != null){
            try {
                return dataSource.getConnection();
            } catch (SQLException e) {
                throw new RuntimeException(e);
            }
        }
        return null;
    }
}
